Darlly 40506 FC-2390 C-4950 PRB50-IN Spa/Pool Filter Cartridge skimmers and this Kemp USA version

and this Kemp USA version uses the 10-103-RED reference

combustion support

The Hayward front header assembly is designed for compatible H-Series induced-draft heater applications from October 2000 and later where the front water-header section needs replacement

or general wear and no longer performs as it should

Darlly 40506 FC-2390 C-4950 PRB50-IN Spa/Pool Filter Cartridge skimmers and this Kemp USA versionA filter cartridge helps keep circulating water cleaner by trapping suspended debris within the filtration system, and this Darlly cartridge is designed for compatible applications referencing FC 2390, C 4950, and PRB50 IN. When the cartridge media has reached the end of its useful life, filtration support can feel less reliable than it should. The cross reference identifiers give this cartridge practical value because filter replacements are most